Electrical switch.



J. GAGNON. ELECTRICAL SWITCH.

APPLIGATION FILED JULY 21, 1909.

Patented Nov. 18, 1913.

FICA

in G H WITNESSES ATTORNEYS WILLIAM J. e-aenou,

OI" BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE BRYANT ELECTRIC CDMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

ELECTRICAL SWITCH.

Specification of Letters Patent.

itatented Nov. 18, 1913.

Application filed July 21, 1909. Serial No. 508,815.

To all whom it may concern:

Be it known that I, l/VTLLIAM J. GacNoN, a citizen of the United States of America, residing in the city of Bridgeport, in the county of l airiield, in the State of Connectiout, have invented certain new and useful Improvements in Electrical Switches, of which the following is a spccitiraition.

My invention relates to iniiprovemenis in electrical switches, more particularly of the push button type, and my improvements are especially intended for use in pendent switches.

The main objects of my invention are to so construct the switch that with the use of a single push button, I may secure ease and certainty of motion with a snap action and to so construct the insulating casing and arrange the metallic parts therein as to pro vide a simple and convenient strain relief sufficient for the purposes of a pendent switch.

In the accompanying drawings l igurc 1 is a side elevation of my improved pendent switch, with the metallic casing and lining in section; Fig. 2 is a plan view of the insulat'ing body; Fig. 3 is a vertical section of the switch, on the line i i-23, l ig. 2; Fig. ti: is a vertical section on the line -l--l, Fig. 2; Fig. 5 is a perspective view of certain parts of the actuating mechanism.

I form the insi'llating body A in the form of a cup, inverted, that is to say, closed at the top (1, (except for the holes for the screws) and open at the bottom, (Fig. 3), and within this cup l arrange the switch mechanism, comprising a rotary snap switch construction B in thrboitom of the cup, and means for imparting intermittent rotary motion to this sna) switch by means of a single push button through the medium of a spirally grooved spindle I).

The switch B may be of any well known or convenient crmstruction, such for example as the eccentric snap or flat escapcment switch of the Hart reissued patent 11,395, Dec. 12, 1893, or the Paiste Patent No. 483,862. It will suliice to note that I), 5, represent the intermittently rotating contact clips to make and break contact with the contacts formed in one with the terminal posts F, which are secured in notches G in the edges of the cup A, (Figs. 1 and 4), and

are provided'with binding screws f for the bared ends of the two or more suspending spindle D, and through the pawl and conducting wires W. On the outside of the cup, on the sides and top i 'iorin grooves w to receive the covered wires snugly. The lined metallic casing 10, Fig. 1, is made to fit snugly over the insulating body and to confine the covered parts of the wires in these grooves, giving to the wires sharp bends around the corners 10 Fig. 4, and other bends where the wires pass out through the outlet bushing c at the top of the casing. This confining ot' the covered wires in the considerable lengths of grooves along the outer sides and top of the cup-shaped lllSlllating body, together with the corners for bends provide a friction on the wires amply sullicicnt to relieve the connections oi the wire ends at the binding or terminal posts from any strain due to the weight or handling of the pendent su'ilch.

To actuate the rotary snap switch I prelcr to employ the following mcansz-0n the lower end of the spindle 7; of the switch I secure a crown piece ll, Fig. 5, with radial teeth b and upwardly bent teeth /1.. These laiicr serve the purpose ol providing a munbcr oi llilllllllllllln' against end of the spring oi the switch may cngage, as adjustment of the spring may require. The radial lcclh ii. serve as ratchet teeth against which engage the teeth 7), 7), on the pawl plate I. secured to the upper end oi. the rotary spindle l). This spindle may be hollow to receive the upper end of a spiral spring S (Fig. i) which resting at ils lower end in the cupped bottom Oil the push button C, tends at all times to keep the pawl I pressed into engagement with the crown ratchet plate H. The push button or rod (l is guided in a bent cross bar K secured by screws 7.: (Fig. 91) across the mouth of the inverted cup A. The upper end of the push button is :l'ormcd with lugs c, c, which are notched or bifurcated, Fig. 5, to engage vertical guides Z1 7c, on the upper side of the cross ha r K, thereby preventing the push button from turning.

0n the exterior of the spindle D is formed a spiral groove (Z and on the interior of the hollow push button C is a projection, preferably in the form of a spiral rib c, Fig. 5, to engage the spiral groove (Z, so that the longitudinal motion of the push button (it is indicated in mid position in Fig. 3) will be converted into a rotary motion of the and ratchet any of whi;;:h the 

